OUT

NR

GND

EN

IN

3

2

4

1

5

2.2 µF

2.2 µF

10 nF

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TPS72301, TPS72325

SLVS346C – SEPTEMBER 2003 – REVISED SEPTEMBER 2014

TPS723xx 200mA Low-Noise, High-PSRR

Negative Output Low-Dropout Linear Regulators

1 Features

3 Description

The TPS723xx family of low-dropout (LDO) negative

1

•

Ultralow Noise: 60

voltage regulators offers an ideal combination of

•

High PSRR: 65 dB Typical at 1 kHz

features to support low noise applications. These

•

Low Dropout Voltage: 280 mV Typical at 200 mA,

devices are capable of operating with input voltages

2.5 V

from –10 V to –2.7 V, and support outputs from –10 V

to –1.2 V. These regulators are stable with small, low-

•

Available in –2.5-V and Adjustable (–1.2 V to

cost ceramic capacitors, and include enable (EN) and

–10 V) Versions

noise reduction (NR) functions. Thermal short-circuit

•

Stable With a 2.2-

μF Ceramic Output Capacitor

and over-current protections are provided by internal

•

Less Than 2-

μA Typical Quiescent Current in

detection and shutdown logic. High PSRR (65 dB at

Shutdown Mode

1 kHz) and low noise (60

ideal for low-noise applications.

•

2% Overall Accuracy

(Line, Load, Temperature)

The TPS723xx uses a precision voltage reference to

achieve 2% overall accuracy over load, line, and

•

Thermal and Over-Current Protection

temperature variations. Available in a small SOT23-5

•

SOT23-5 (DBV) Package

package, the TPS723xx family is fully specified over

•

SOT-5 (DDC) Package

a temperature range of –40°C to 125°C.

•

Operating Junction Temperature Range: –40°C to

Device Information(1)

125°C

PART NUMBER

PACKAGE(2)

BODY SIZE (NOM)

2 Applications

SOT-23 (5)

2.90 mm x 1.60 mm

TPS723xx

SOT (5)

2.90 mm x 1.60 mm

•

Optical Drives

(1) For all available packages, see the orderable addendum at

•

Optical Networking

the end of the datasheet.

•

Noise Sensitive Circuitry

(2) The two SOT23 packages are identical in size, but the SOT

•

GaAs FET Gate Bias

package is thinner.

•

Video Amplifiers

Typical Application Circuit

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.